A Battle Touching Upon the Identity of the Pain that's Seven Times the Pain of One-Seventh of a Pain.The Kiznaivers except Honoka visit the parents of Ruru, learning about her terminal kidney disease that led to her inevitable death. Meanwhile, Honoka reminisces about her time with Ruru of when they were a manga artist duo under the pen name Charles de Macking. They were best friends, but Ruru started developing feelings for Honoka, which created a wedge and drove them apart, so Ruru did the last chapter on her own. As Honoka's heartache resonates within the other Kiznaivers, they set out to form a lasting friendship with her. Although a withdrawn Honoka ignores their calls in her room, her heart is touched when Nico has an outburst of concern. During a downpour, Honoka encounters Tsuguhito reading her manga, but he is surprised to learn that she has never read the last chapter. As Tsuguhito and Honoka meet up with the other Kiznaivers attempting to light up sparklers at the beach, Honoka suggest that they should swim, despite the weather. Honoka reaches the end of the manga and her heart is at ease, as Ruru's message was a sign of forgiveness. Honoka assures the others that they are closer as Kiznaivers rather than friends or lovers.